新增 docker 文件
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# Maven
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target/
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!.mvn/wrapper/maven-wrapper.jar
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!**/src/main/**/target/
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!**/src/test/**/target/
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# IDE
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.idea/
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*.iml
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.vscode/
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.eclipse/
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# Logs
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*.log
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logs/
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# OS
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.DS_Store
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Thumbs.db
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# Git
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.git/
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.gitignore
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# Docker
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Dockerfile
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.dockerignore
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# 多阶段构建:构建阶段
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FROM maven:3.8.6-openjdk-8 AS builder
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WORKDIR /app
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# 复制 pom.xml 并下载依赖(利用 Docker 缓存)
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COPY pom.xml .
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RUN mvn dependency:go-offline
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# 复制源代码并构建
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COPY src ./src
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RUN mvn clean package -DskipTests
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# 运行阶段
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FROM openjdk:8-jre-alpine
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WORKDIR /app
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# 从构建阶段复制 jar 文件
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COPY --from=builder /app/target/*.jar app.jar
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# 创建日志目录
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RUN mkdir -p /app/logs
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# 暴露端口
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EXPOSE 8080
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# 健康检查
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HEALTHCHECK --interval=30s --timeout=3s --start-period=40s --retries=3 \
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CMD wget --quiet --tries=1 --spider http://localhost:8080/actuator/health || exit 1
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# 启动应用
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ENTRYPOINT ["java", "-jar", "app.jar"]
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